Sound-box attachment for phonographs.



S. E. HUFF.

souwo BOX ATTACHMENT FOR PHUNOGRAPHS.

APPLICATION FILED SEPT- M. 19%.

Patented 10%. 12, 1916.

. I I I I l l uuummfLTMMJJLIJITW T u T M WW STEPHEN E. HUFJF, DE LOSANGELES, CALIFORNIA.

SOUND-BOX ATTACHMENT FOR PHONOGRAPHS.

Specificatiofi of Letters Patent.

Patented Dec. 12, 1218 Application filed September 1 1, 1914. serial No.861,497.

To all whom it may concern ]Be it known that I, STEPHEN E. Hurr, acitizen of the United States, residing at Los Angeles, in the county ofLos Angeles, State of California, have mvented new and usefulImprovements in Sound-Box Attachments for Phonographs, of which thefollowing is a specification.

This invention relates to a sound-box attachment for 'phonographs, andpertains especially to an attachment whereby phonographs constructed toplay hill and dale groove records may be used to play lateral grooverecords.

It is an object of this invention to rovide an attachment of the abovedescribed character with which any one .of several standard type soundboxes may be used.

It is another object of this invention to provide a sound box attachmentof the above described character in which the sound box may be turned toprovide for the insertion and removal of the needle.

1t is a further object of this invention to provide the connection forthe sound box whereby the latter may be turned and temporarily locked ineither its operative or inoperative position.

The invention is illustrated in the accompanying drawing, in which:

Figure 1 is a view in side elevation illustrating a sound box as mountedin accordance with this invention, and indicating in dotted linesthepositions assumed by the sound box when inserting and removing thestylus, and when the sound box is not in use. Fig. 2 is a plan view.Fig. 3 is a vertical section on the line 33 of Fig. 2 partly inelevation. Fig. 4 is a detail section on the line 4--4= of Fig. 2. Fig.5 is a detail section. on the line 5--5 of Fig. 2, partly in elevation.Fig. 6 is a detail view of the mounting showing it as adapted to receivea male connection on the sound box.

More specifically, 10 indicates the tubular union connected to thephonograph tone arm 11 by means ofa ball and socket joint comprising theball member 12 formed at the base of the horn and the socket 13 carriedby the union 10. A pin 14c on the walls of the socket 13 extends into aslot 15 formed in the ball 12 to restrict the universal movement of theunion 10 in relation to the tone so that upward movement of the union 1017 to the outer end of the union 10 consists of a tubular adapter 18adapted to extend into the outer end of the union 10 in engagementtherewith, said adapter 18 having an outwardly extending tubular portion19 which may comprise a male member as shown in Fig.3 or may consist ofa female member 20 as shown in Fig. 6 according to whether the sound box17 is formed with a female nipple 21 as shown in Fig. 3, or a malenipple 22 as shown in Fig. 6. The member 19 is designed to extend intothe member 21 in frictional engagement therewith, and a screw 23 on themember 21 is adapted to extend into a slot 24 in the member 19 to forman engagement between. the members 19 and 21 whereby turning of thesemembers in relation to each other is prevented.

In the construction shown in Fig. 6 a set screw 25 is mounted in themember 20 and is adapted to engage the member 22 on the sound box 17 toeffect a secure engagement between the members 20 and 22.

The adapter 18 is designed to be rotated in its mounting in the end ofthe union 10 and to be locked against movement both in an operative andinoperative position. For this purpose the adapter 18 is formed with anannularly extending channel 26, here shown as extending approximatelythree-fourths of the distance around the circumference of the adapter 18and terminating in apertures 27 and 28. Formed on the union 10 is anexternally threaded tubular member 29 which opens to the interior of theunion 10 oppo site the channel 26 formed in the adapter 18, andreciprocally mounted within the tube 29 is a plunger 30, the inner endof which is mounted and extends into the channel 26 and is adapted toengage the apertures 27 and 28 to hold the adapter 18 and the sound box17 thereon against rotation. plunger 30 is formed with a stem 31 whichprojects through an opening formed in a cap 32, fitted on the outside oftube 29., and. wound around the stem 31 interposed between the cap 32and the plunger 30 is a spring 33 which operates to normally main tainthe plunger 30 in its innermost position. The tension of the spring 33may be ad.-

The i tioned the plunger 30 will engage the aperture 27 to hold thesound box against displacement in relation to the union 10.

When it is desired to remove or replace the stylus 34 the sound box 17is rotated in the direction indicated by the arrow a in Fig. 1

to dispose the stylus carrying bar in the upright' position indicated indotted lines in Fig. 1; plunger 30 riding out of engagement with thewalls of the aperture 27 on rotary pressure being applied to the soundbox. The sound box may then be restored to its initial position byturning it in the reverse direction or it may be turned to dispose thestylus ina horizontal position with the point of the stylus extending ina rearward direction as indicated by the dotted lines 6 in Fig. 1. Whenthus positioned the plunger 30 will extend into the aperture 28 andthereby lock the sound box with the stylus retracted out of itsoperative position.

The plunger 30 in engaging the circumferential groove 26, serves to holdthe adapter 18 against withdrawal out of engagement with the union 10and being under the tension of the spring 33 bears against the walls ofthe groove 26 when disposed there in and out of engagement with thewalls of the apertures 27 and 28 to frictionally oppose free rotation ofthe adapter 18 so that the latter will tend toremain in any positionwithin its range of movement. The frictional engagement of the plunger30 with the walls of the groove 26 may be varied by adjusting the cap29.

messes What if claim is:

1. A sound box mountin for phonographs, comprising the com ination of atubular elbow union having means for oonnecting it to a tone arm, anadapter revolubly mounted in said union having at one end a tubularportion adapted to be connected to the nipple of a sound box and at theother end a. circumferentially extending groove formed with recesses,and a spring pressed plunger carried by said union arranged to extendinto said groove to hold the adapter against disconnection from theunion and adapted to extend into the recesses in said groove to lock thecoupling against free movement.

2. A sound box mountin for phonographs, comprising the com ination of atubular elbow union having means for connecting it to a tone arm, anadapter revoluhly mounted in said union having at one end a tubularportion adapted to be connected to the nipple of a sound box and at theother end a groove extending partially around the circumferencethereofformed with recesses at the terminations of said groove, :1 springpressed plunger carried by the union adapted to extend into said grooveto hold said adapter against disconnection from the union, and adaptedto extend into the recesses at the ends of the groove to lock thecoupling against free movement, said plunger arranged to permit movementof said union. in either direction.

In witness that I claim the foregoing T have hereunto subscribed my namethis 1st day of September, 1914:. I

' STEPHEN E. HUFF.

Vvltnesses Mxneunnirn BATES, MARIE BATTEY.

